Reinforced concrete construction.



. ROBINSON.

NBINPCRCED CONCRETE CONSTRUCTION.

APPLICATION FILED MAYQ, 1908.

Patented DCC. 27, 1910.

2 BHEETS*SHEET 2.

ma NcRR/s Perales co., mum/cron n. c.

FRANK S. ROBINSON, Ol DETRQI', MCHIGAN.

stanca.

Specication of Letters Patent.

Patented Dec. 27, 1910.

Application filed May e, 190s'. serial No. 431,893.

To all whom it may concern:

Be it known that FRANK S. RoniNsoN, a citizen of the United States of America, residing at Detroit, in the county of Vayne and State of Michigan, have invented certain new and useful Improvements in Reinforced Concrete Constructions, of which the following is a specification, reference being had therein to the accompanying drawings.

rlhe invention relates generally to reinforced concrete constructions, and more particularly to structures in which the framework is a monolithic reinforced concrete construction, other portions of the structure being formed of preformed members positioned and supported by said frame-work. A specific example of such is a floor construction in which the girders and beams are monolithic reinforced concrete, and the spans between the beams are filled with tile or other preformed members.

It is the object of the'present construction to simplify and expedite the construction of the structure avoiding the necessity of an elaborate false work or temporary support. To this end, one of the features of the invention is the means employed for molding and temporarily supporting port-ions of the reinforced concrete frame-work; further in the peculiar construction of a tile or preformed structural element which is used in combination with the frame; and, further, in the peculiar construction, arrangement and combination of parts as hereinafter set forth.

In the drawingswldigures l and 2 are vertical sections in planes at right angles to each other through a floor construction embodying my invention; and Fig. 3 is a perspective view of one of the tiles.

Heretofore in the construction of floor structures of the type above referred to it has been customary to first prepare a very complete false work comprising mold boxes for the girders and beams of the frame work, and an interi'nediate flooring for temporarily supporting the tiles. With my im. proved construction, it is only necessary to provide mold boxes for the girders or main members of the frame work, and a skeleton support for the structure intermediate these members which is formed in the following manner.

A are preformed tile members, which are preferably of a length to span the space between the mold boxes B B for the main girders of the frame. These t-ile members are formed of a hollow box-like construction, and are provided at one edge with a laterally extending flange C having a hook or rib D at the end thereof adapted for engagement with a corresponding channel E formed on the opposite edge of the tile. The structure is such that two tiles, when ar ranged side by side with the edge D in engagement with the grooves E, will form therebetween a channel F, and this channel is properly positioned for receiving` the reinforced concrete cross beam between the girders. Thus in building the structure theitiles may be placed in position before the forma tion of either the girders or the beams. The metallic reinforced members, such as D', are then placed inl position in the channels F, after which the concrete may be filled in and allowed to stand until hardened. It will be observed that the tiles A form the molds for the cross beams, and these cross beams may form a. monolithic or integral structure with the girders. All that is necessary in the way of additional support is a skeleton frame, such as H, which will support the load until the cement has hardened.

The tiles A are preferably formed of lireproof cementitious material and for lightness preferably contains a large percentage of wood fiber.

vWhat I claim as my invention is:

l. A building construction comprising' pre-formed span members having therebetween closed bottom channels, the base of the channel being formed by an extension of the bottom wall of one of said members, said extension terminating in a vertical flange and the adjacent s-pan member having a U- shaped socket with which said flange engages. l i

2. A building construction comprising pre-formed span members having therebetween closed bottom channels, the sides of said channels being formed by the side walls of the adjacent span members and the base of the channel being formed by an eXtension of the bottom wall of one of said span members, said extension having an interlocking engagement. with the adjacent span member' beyond the plane of theside wall of the last-mcntioned span member.

3. A building construction comprising pre-formed span members having therebetween closed bottom channels, the sides of said channels being formed by the side Walls of of the latter with Which said flange has an the adjacent span members and the base of interlocking engagement. l0 the channels being formed by an extension In testimony whereof I aiiix my signature of the bottom Wall of one of said Span memin presence of two Witnesses. bers, said extension terminating in an up- FRANK S. ROBINSON.

Wardly ,projecting iange, and an inverted VVtnesSes: U-shaped socket formed in the other span NELLIE KINSELLA, member beyond the plane of the side Wall HARRY W. GALVIN. 

